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Nickel drives bacterial community diversity in the rhizosphere of the hyperaccumulator Alyssum murale

hal.structure.identifierLaboratoire Sols et Environnement [LSE]
dc.contributor.authorLOPEZ, Séverine
hal.structure.identifierLaboratoire Agronomie et Environnement [LAE]
dc.contributor.authorPIUTTI, Séverine
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorVALLANCE, Jessica
hal.structure.identifierLaboratoire Sols et Environnement [LSE]
dc.contributor.authorMOREL, Jean-Louis
hal.structure.identifierLaboratoire Sols et Environnement [LSE]
dc.contributor.authorECHEVARRIA, Guillaume
hal.structure.identifierLaboratoire Sols et Environnement [LSE]
dc.contributor.authorBENIZRI, E
dc.date.accessioned2024-04-08T12:35:50Z
dc.date.available2024-04-08T12:35:50Z
dc.date.issued2017-11
dc.identifier.issn0038-0717
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197344
dc.description.abstractEnUltramafic soils display high concentrations of nickel and a number of nutrient deficiencies. Nickel-hyperaccumulator plants, such as Alyssum morale, have evolved in these environments and developed specific metal homeostasis, showing concentrations of nickel (Ni) sometimes exceeding 1% in their aerial biomass. Rhizosphere bacterial communities associated with Ni-hyperaccumulator plants can differ from those of non-accumulating plants growing on the same site. Among the edaphic factors that could influence the phylogenetic structure of the bacterial communities, altitude and metal-bioavailability such as Ni in particular, could be significant. Our objectives were to understand the specific changes in the structure of the A. morale rhizosphere bacterial community that occurred across two gradients: elevation and Ni geochemistry, using a high-throughput sequencing technique (454-pyrosequencing). In this study, Chloroflexi was the major phylum present, with 53-77% of relative abundance. Moreover, we found that the higher the soil's chemically-available Ni contents, the higher was the relative abundance of Proteobacteria (particularly Alphaproteobacteria) and Actinobacteria. In contrast, the abundance of Chloroflexi decreased with increasing levels of available Ni. Our results demonstrate that the chemical availability of Ni in the studied soil drives the bacterial community diversity in the rhizosphere of A. murale, regardless of elevation gradient and other soil physicochemical parameters.
dc.description.sponsorshipStrategic metal resources of the 21st century - ANR-10-LABX-0021
dc.language.isoen
dc.publisherElsevier
dc.title.enNickel drives bacterial community diversity in the rhizosphere of the hyperaccumulator Alyssum murale
dc.typeArticle de revue
dc.identifier.doi10.1016/j.soilbio.2017.07.010
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.journalSoil Biology and Biochemistry
bordeaux.page121-130
bordeaux.volume114
bordeaux.hal.laboratoriesSanté et Agro-Ecologie du Vignoble (SAVE) - UMR 1065*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02477813
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02477813v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Soil%20Biology%20and%20Biochemistry&rft.date=2017-11&rft.volume=114&rft.spage=121-130&rft.epage=121-130&rft.eissn=0038-0717&rft.issn=0038-0717&rft.au=LOPEZ,%20S%C3%A9verine&PIUTTI,%20S%C3%A9verine&VALLANCE,%20Jessica&MOREL,%20Jean-Louis&ECHEVARRIA,%20Guillaume&rft.genre=article


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